<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var stu = {
				id: 1,
				name: "张三",
				age: 18,
			}

			// 对象访问语句
			// 1. for ... in 对象
			for (var i in stu) {
				document.write(i + "," + stu[i] + "<br />");
			}

			// 2. with语句
			with(stu) {
				document.write(id + "," + name + "," + age);
			}
		</script>
	</body>
</html>
